Improvement in well-drills



l `rUNI'IIID STATES,

'PATENT OFFICE. Y

e .AMosfonAND'ALu oefenen@ BEND, PENNSI IINANIA.

l, iMfP'RovEivl-ENT IN WELL-usines.

f l specification foming pmof Letters Patent No. 48,524, daten July 4, teuf.

To all whom it 'muy co'm'erm the State of Pennsylvania, have invented a n new and' useful Impro'vcmentin .Drills for Boring for Oil or Minerals; and I d o hereby de- `clerethet,the following is a full, clear, ouden;f

act' description of the same, reference being I :had to the-eccompanying drawings, making a part ofthis spcciticatiomiu which; 4

I .t Figure `1- is a. side'view, and'Fig. 2 ijs a loli- `gitndinal section, of myinveutiou. I

- i 'Similar letters of reference indicate correspondin'gparts in both figures.

The object of this Invention is to provide nu instrument for drilling oil-wells ordrilliug for n fminerals which will do the work of drilling and wreamingout the well and pumping out the sand `ut'the'seme operation, thus combining a.

drill, reamer, and sand-pump.

I attach to the shaft S one or .more buckkets, B B B, which" nre' held in place by the screws W W W, or sonne equvalcntdevice. A short drill, D, is screwed or otherwise fastened tothe lower end of the shaft S, 'andre realmer,

i R, tted on the drill, like a. collar. The reamer R is Vprovided with the cutters E E, proi jectingdownward'V and slightly beveled on theV inside. The rentner projects a little beyond l the cutting-edge of the drill, so as to dress out the well, and-is placed at the edge Iof the drill.`

, The advantage ot' usinga short drill ia'that i Be it'known that `I, AMOS GRANDALL, of.

"Great Bend, ,in the county of Susquehanna, in v 'the drill cuts its'way through the rrock or otherV l itis not liablc't'o c ramp inculati g through rock, The operntiouofthe whole is as follows: As

substance the reamer follows and dresses out the well the required size. The diameter'ot the bueketsbeiug somewhat less than that of the well, a space is left for the water to pass ets. 4The buckets are made daring at the top,

`so es to crowd the water and sand against the surface ofthe well and cause it to rush over' into" the buckets. -When the buckets become illed with the sund' or dirt the drill is withdrawn andthe buckets emptied. By lengthening the shaft S the buckets may be carried to any rei quired depth.

.Having thus described 'my improvement,

what l claim as Ymy invention, and desire to secure by Letters Patent, is-

The combination and arrangement of the drill D, reamer Rshaft S, and buckets B B y B, constructed and operating substantially as and for the purposes set forth.

Amos CRANDALL.

Witnesses f IstmoY REoKHoW,

right angles with l J. C. GREEN. 

